Abstract:
PURPOSE: An authentication apparatus for a non-real-time IP(Internet Protocol) television system and method thereof are provided to maintain safety for service denial attacks using the variation of a time stamp. CONSTITUTION: When an authentication result for a content request message is effective, an authentication apparatus encrypts the variation of a time stamp between the authentication apparatus and an apparatus using a session key(S405,S407). The authentication apparatus creates authentication information which the apparatus authenticates the authentication apparatus using a second encryption value(S411). The authentication apparatus transmits the authentication information with content corresponding to the content request message to the apparatus(S419).
Abstract:
PURPOSE: A key updating method for a scalable media service and a device thereof are provided to support universal expandability of an operation together with a video streaming technology, an encoding technology, and a session key operating technology. CONSTITUTION: A scalable media streaming server(1300) encodes a streaming unit which is generated by streaming scalable media. A key directory center(1400) receives metadata from a scalable media managing server. The key directory center generates an encoding key for encoding the scalable media by a scalable unit. The key directory center hierarchically generates a hierarchical sub key to generate a session key. The session key protects the generated encoding key.
Abstract:
PURPOSE: An apparatus and a method for diagnosing Alzheimer disease using voice call information are provided to rapidly provide a judgment about symptom of Alzheimer disease without medical professional by measuring and analyzing voice call information on the phone. CONSTITUTION: A communication function part(110) processes transmission and reception of voice information for calling. The communication function part includes a call function part(111) and a message function part(112). An Alzheimer diagnostic part(120) includes a voice data processor(125) and an Alzheimer disease sign determining unit(123). The voice information processor includes a voice data recognition part(121) and a voice information analysis part(122). An user information storage part(130) stores calculation result information of the voice data recognition e part.
Abstract:
PURPOSE: A contents management method in the bidirectional digital broadcasting system is provided, which stores the broadcasting contents of the IPTV safely, registers the broadcasting contents in server, and provides the reading service of the broadcasting contents to other users, therefore, the contents management method activates the contents service usage of the IP network like the IPTV service. CONSTITUTION: A client terminal 1 transmits the require-message for the individual safety information request through the IP net to the contents managing server(S200). The contents managing server analyzes the require-message(S202). If the client of the client terminal 1 is a proper client, and then the contents managing server transmits the individual security information to the client terminal 1(S204,S206), the client terminal 1 stores the individual security information(S208).
Abstract:
PURPOSE: An encrypting method and a decrypting method of data are provided to keep transmission bandwidth of video stream without padding by applying length of data same with length of the video stream to the system in which needs quick encoding. CONSTITUTION: Initial value for encryption and encryption key is instituted(S201). A plain text partitions code calculation size to a plurality of blocks(S202). It is allocated in the plaintext block in which the block number variable partitions. Block number variable is allocated on the separated plain text. The plain text block is successively selected based on the block number variable(S203). The block number variable of the selected plaintext block is checked(S204). If plain text block is a first plaintext block, initial value and encryption key are input on a encryption device(S205). A calculation result of exclusive logical sum is inputted to the encryption device(S208). An encrypted text block is obtained the same size of the final plain text block(S209).
Abstract:
모바일 IPv6 이동노드의 초기구동을 지원하기 위해 다이어미터 AAA 인프라를 이용하는 네트워크 시스템이 제공된다. 이 시스템은, 모바일 IPv6 프로토콜을 탑재한 이동노드, 이동노드가 새로운 네트워크에 이동 시 접근하는 수행원, 로컬네트워크에서의 이동노드의 인증/인가/권한검증 처리를 지원하는 AAA로컬서버, 홈 네트워크에서의 이동노드의 인증/인가/권한검증 처리를 지원하며 이동노드의 초기구동 시 초기 설정을 지원하는 AAA홈서버, 및 이동노드와의 바인딩업데이트 및 바인딩확인을 처리하는 홈에이전트를 포함한다. 그러므로, AAA로컬서버에 의해 인증된 이동노드에 대해, AAA홈서버는 그 이동노드의 초기구동을 위한 초기설정을 행할 수 있고, 이러한 초기설정에 기초하여 이동노드와 홈에이전트는 서로 간에 IPSec SA를 분배하고 바인딩업데이트 및 바인딩확인을 수행할 수 있다. 따라서, 본 발명은 모바일 IPv6 초기구동에 있어, 이동노드와 홈에이전트 사이에 안전한 초기구동을 보장할 수 있다. Mobile IPv6, AAA(Authentication Authorization and Accounting), DIAMETER, Mobile Internet, Wireless Internet, Mobile Computing